Which Furnace is Right for My Home?

http://www.consumersearch.com/furnaces is a great site giving homeowners various ways to look into the qualities they will need in a furnace. The first "tab" (Top 4 Best Reviewed) provides the "best" rated furnace in 4 categories and then explains what each of the pros and cons are for each unit. This site might be helpful if you are looking to make an upgrade in your furnace. One the second tab (What to Look for) there is a list of questions that a homeowner should ask the contractor before settling on a furnace model. These include things like inquiring about the noise level or the running speed. They also recommend finding a trustworthy company to install the unit as illustrated in the quotation below.

"Experts stress the importance of taking your time to find a good HVAC professional. The best way to start is to ask friends and neighbors for references. Contractors should be licensed and have appropriate insurance, liability and workman's comp paperwork. You will need a permit before work is started, and you should ask your contractor to procure this for you so that the work can be checked by a local government inspector."

The third and final tab on this page (Full Report) gives an expanded version of the suggestions (where more questions may be answered) as well as the sources for the information. If you are looking to upgrade, check out this site.